The excavator needs to be maintained after construction to maintain the equipment with sufficient power and efficient operation performance. In the daily maintenance, we mainly manage the fuel oil, other oils, lubricating grease and filter element, which can reduce most of the faults. This article will summarize what parts of fuel, other oil, lubricating grease and filter element should be paid attention to in the daily maintenance of excavator for reference only.
1. Fuel management
1) Different grades of diesel oil shall be selected according to different ambient temperatures.
2) Diesel oil shall not be mixed with impurities, ash and water, otherwise the fuel pump will be prematurely worn.
3) The high content of paraffin and sulfur in inferior fuel will damage the engine.
4) After daily operation, the fuel tank shall be filled with fuel to prevent water droplets on the inner wall of the fuel tank.
5) Open the drain valve at the bottom of the fuel tank to drain water before operation every day.
6) After the engine runs out of fuel or the filter element is replaced, the air in the pipeline must be exhausted.
2. Management of other oils
Other oils include engine oil, hydraulic oil, gear oil, etc.
1) Oils of different brands and grades shall not be mixed.
2) Different kinds of excavator oils have different chemical or physical additives added in the production process.
3) Ensure that the oil is clean and prevent sundries such as water, dust and particles from mixing in.
4) The label of oil shall be selected according to the ambient temperature and purpose. If the ambient temperature is high, the engine oil with high viscosity should be selected. The oil with low viscosity shall be selected when the ambient temperature is low. The viscosity of gear oil is relatively large to adapt to large transmission load, and the viscosity of hydraulic oil is relatively small to reduce liquid flow resistance.
3. Grease management
1) The use of lubricating oil can reduce the wear of moving surface and prevent noise.
2) When the grease is stored, it shall not be mixed with dust, sand, water and other impurities.
3) When filling, try to squeeze out all the old oil and wipe it clean to prevent sand adhesion.
4. Maintenance of filter element
The filter element plays the role of filtering impurities in the oil circuit or gas circuit to prevent them from invading into the system and causing faults.
1) Various filter elements shall be replaced regularly according to the requirements of the operation and maintenance manual.
2) When replacing the filter element, check whether there is metal attached to the old filter element. If there are metal particles, timely diagnose and take improvement measures.
3) Use a pure filter element that meets the requirements of the machine. The filtering capacity of fake and shoddy filter elements is poor, and the surface and material quality of the filter layer do not meet the requirements, which will seriously affect the normal use of the machine.
